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Title: Single-site entanglement of fermions at a quantum phase transition

Abstract

We show that the single-site entanglement of a generic spin-1/2 fermionic lattice system can be used as a reliable marker of a finite-order quantum phase transition, given certain provisos. We discuss the information contained in the single-site entanglement measure, and provide illustrations from the Mott-Hubbard metal-insulator transitions of the one-dimensional (1D) Hubbard model, and the (1D) Hubbard model with long-range hopping.

Authors:
 [1];  [2];  [3]
  1. Fachbereich Physik, Philipps Universitaet Marburg, D-35032 Marburg (Germany)
  2. (Sweden)
  3. Department of Physics, Goeteborg University, SE-412 96 Goeteborg (Sweden)
Publication Date:
OSTI Identifier:
20787093
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.73.042320; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; FERMIONS; HUBBARD MODEL; METALS; ONE-DIMENSIONAL CALCULATIONS; PHASE TRANSFORMATIONS; QUANTUM ENTANGLEMENT

Citation Formats

Larsson, Daniel, Department of Physics, Goeteborg University, SE-412 96 Goeteborg, and Johannesson, Henrik. Single-site entanglement of fermions at a quantum phase transition. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Larsson, Daniel, Department of Physics, Goeteborg University, SE-412 96 Goeteborg, & Johannesson, Henrik. Single-site entanglement of fermions at a quantum phase transition. United States. doi:10.1103/PHYSREVA.73.0.
Larsson, Daniel, Department of Physics, Goeteborg University, SE-412 96 Goeteborg, and Johannesson, Henrik. Sat . "Single-site entanglement of fermions at a quantum phase transition". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20787093,
title = {Single-site entanglement of fermions at a quantum phase transition},
author = {Larsson, Daniel and Department of Physics, Goeteborg University, SE-412 96 Goeteborg and Johannesson, Henrik},
abstractNote = {We show that the single-site entanglement of a generic spin-1/2 fermionic lattice system can be used as a reliable marker of a finite-order quantum phase transition, given certain provisos. We discuss the information contained in the single-site entanglement measure, and provide illustrations from the Mott-Hubbard metal-insulator transitions of the one-dimensional (1D) Hubbard model, and the (1D) Hubbard model with long-range hopping.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 4,
volume = 73,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}